RETEMSA´s model GSMR7H-XXXT repeater is a

bidirectional superheterodyne receiver / transmitter that

has been designed to provide coverage in buildings,

parkings, tunnels (indoor applications) and rural areas,

airports, motorways (outdoor applications).

RETEMSA also has other Standard interfaces like optic

fiber or radiating cable to specific applications.

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MODEL GSMR7H-XXXT GSM 900 MHz / 33 dBm

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• Band Selective repeater for GSM 900 MHz systems.

• Full-duplex configuration based on heterodyne structure over 70 MHz

• Output power up to 33 dBm / 1 carrier.

• Bandwidth customizable

• Gain from 35 to 85 dB, adjustable in steps of 1 dB with a Windows ® compatible software.

• Dynamic margins 75 dB

• Automatic Level Control loops to suppress unwanted disturbing radio signals

• Remotely controlled model can be managing with a standard computer and a modem (9600 bauds).

• Windows interface for configuration all parameters: uplink and downlink gain, ALC loops, channels, alarms reports, monitoring in / out levels.

• Complete system: fixed base plus control software includes.

Quick deployment and cost effective coverage indoor / outdoor applications.

PC repeater configuration software

Parameters

Test Conditions

Downlink

Uplink

Units

Work Band At -3 dB 935-960 890-915 MHz BandWidth At -3 dB Customizable Customizable MHz Parameters Test Conditions Min Typ Max Min Typ Max Units

OutPut power (1 carrier) 1dB compression

+33 +34 +33 +34 dBm

OutPut power (2 arriers) 1 dB ompression

+20 +20 dBm

IP3 Two equal carriers

40 42 40 42 dBm

Input sat. Level (1 carrier) 1 carrier -10 0 -10 0 dBm ± 1 MHz ± 2 MHz Out of band gain (Ref: 0 dB)

Min Typ Max Min Typ Max

Uplink -15 -45 -48 dB Downlink -15 -45 -48 dB

Parameters Minimum Typical Maximum Units Uplink Gain (1 dB step, software configurable)

35 80 85 dB

Downlink Gain (1 dB step, software configurable)

35 80 85 dB

In Band Ripple ± 1 ± 1.5 ± 3 dB ALC window 45 65 80 dB

Uplink Excitability -105 -100 -90 dBm Downlink excitability -105 -100 -90 dBm

Noise factor 4 dB In/Out impedance 47 50 Ω

Return losses -11 -12 dB Group Delay 4 4.5 5 µs

Power supply AC levels 100 220 240 Vac Power consumption 40 W

RF connectors N Female Other options by demand MTBF 100.000 Hours

Temperature range -35ºC to 55º C IP 65 Package Dimensions (mm) WxHxD 300x400x230 mm

MECHANICAL AND ENVIROMENTAL SPECIFICATIONS:

1 Factory defaults. Manufactured under ISO 9002.

ELECTRICAL SPECIFICATIONS AT Ta=25ºC: